One of the most important innovation in manufacturing in the past few decades is additive manufacturing, i.e., 3-D printing, which is a disruptive technology that has generated profound impact from personal to industrial level. 3-D printing enables rapid prototyping and customization as well as the fabrication of complex structures that cannot be produced via conventional methods. Recent research in 3-D printing technology further improves the printing resolution, scale, and material choices, e.g., printing composite materials. Our group is the first to incorporate a digital micromirror device (DMD) to achieve temporal focusing, a unique technology that generates a femtosecond light-sheet in space, for parallel metal processing. The femtosecond laser is focused as a light-sheet rather than a scanning focal spot to achieve rapid fabrication for various materials, which is 1000 times faster than other state-of-art 3D nanofabrication techniques. Combining our novel fabrication techniques with different functional materials, e.g., magnetic and piezoelectric materials, nano-scale functional devices can rapidly prototyped and batch fabricated.

 

在過去的幾十年中，3D列印技術（又叫增材製造）是製造業中最重要的創新之一。這是一種從個人到工業層面都已產生深遠影響的顛覆性技術。3D列印可實現快速的制樣和定制，以及製造通過常規方法無法生產的複雜結構。3D列印技術的最新研究方向，則是進一步改善列印解析度，尺度和可供列印的材料種類，例如複合材料等。我們團隊第一個在金屬增材製造中引入數位微鏡陣列器件（DMD）來實現飛秒鐳射的時域聚焦，從而實現高速並行加工。該技術是一種可以在空間中產生飛秒光片的獨特技術，飛秒鐳射在空間中被聚焦為一個光片而不是焦點，從而大幅縮減加工時間，比其他最新的3D納米製造技術快1000倍以上。將我們創新的納米製造技術與不同的功能材料（例如磁性和壓電材料）相結合，可以實現並納米功能器件的制樣以及批量製造。